In telecommunications, a customer service unit (CSU) is a device that provides an accessing arrangement at a user location to either switched or point-to-point, data-conditioned circuits at a specifically established data signaling rate. A CSU provides local loop equalization, transient protection, isolation, and central office loop-back testing capability.
In telecommunications, a customer service unit (CSU) is a device that provides an accessing arrangement at a user location to either switched or point-to-point, data-conditioned circuits at a specifically established data signaling rate. A CSU provides local loop equalization, transient protection, isolation, and central office loop-back testing capability.
Source: Wikipedia "Customer service unit" · CC BY-SA 4.0
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